Low-Noise, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements - ADS1299

ADS1299 (ACTIVE)

Low-Noise, 8-Channel, 24-Bit Analog Front-End for Biopotential Measurements

Recommended alternative parts

  • ADS1198  - The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent. 
  • ADS1298  - The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent. 

Description

The ADS1299 is a low-noise, multichannel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator. The ADS1299 incorporates all commonly-required features for electroencephalogram (EEG) applications.

With its high levels of integration and exceptional performance, the ADS1299 enables the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS1299 has a flexible input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and lead-off detection. Additionally, any configuration of input channels can be selected for derivation of the patient bias output signal. The ADS1299 operates at data rates from 250 SPS to 16 kSPS. Lead-off detection can be implemented internal to the device, either with an external pull-up or pull-down resistor or an excitation current sink or source.

Multiple ADS1299 devices can be cascaded in high channel count systems in a daisy-chain configuration. The ADS1299 is offered in a TQFP-64 package specified from –40°C to +85°C.

Features

  • Eight Low-Noise PGAs and Eight High-Resolution Simultaneous-Sampling ADCs
  • Very Low Input-Referred Noise:
    1.0 µVPP (70-Hz BW)
  • Low Power: 5 mW/channel
  • Input Bias Current: 300 pA
  • Data Rate: 250 SPS to 16 kSPS
  • CMRR: –110 dB
  • Programmable Gain: 1, 2, 4, 6, 8, 12, or 24
  • Unipolar or Bipolar Supplies:
    • Analog: 4.75 V to 5.25 V
    • Digital: 1.8 V to 3.6 V
  • Built-In Bias Drive Amplifier,
    Lead-Off Detection, Test Signals
  • Built-In Oscillator
  • Internal or External Reference
  • Flexible Power-Down, Standby Mode
  • Pin-Compatible with the ADS1298IPAG
  • SPI™-Compatible Serial Interface
  • Operating Temperature Range: –40°C to +85°C

View more

Parametrics Compare all products in Medical Analog Front End

 
Resolution (Bits)
# Input Channels
Pin/Package
Sample Rate (max) (SPS)
Interface
Approx. Price (US$)
Reference Mode
Operating Temperature Range (C)
Architecture
# Input Channels
ADS1299 ADS1191 ADS1192 ADS1291 ADS1294 ADS1296 ADS1298
24     16     16     24     24     24     24    
8     1     2     1     4     6     8    
64TQFP     32TQFP
32VQFN    
32TQFP
32VQFN    
32TQFP
32VQFN    
64NFBGA
64TQFP    
64NFBGA
64TQFP    
64NFBGA
64TQFP    
16KSPS     8KSPS     8KSPS     8KSPS     32KSPS     32KSPS     32KSPS    
Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI    
36.00 | 1ku     2.95 | 1ku     3.85 | 1ku     3.75 | 1ku     11.95 | 1ku     17.95 | 1ku     23.95 | 1ku    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85
0 to 70    
-40 to 85
0 to 70    
-40 to 85
0 to 70    
Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma    
8     1     2     1     4     6     8    

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Companion parts

Part # Name Product Family Comments
ADS1291   Complete Low Power Integrated Analog Front End for ECG Applications   ANALOG FRONT END - Medical Analog Front End    Single-channel, 24-bit ADC  
ADS1191   Complete Low Power Integrated Analog Front End for ECG Applications   ANALOG FRONT END - Medical Analog Front End    Single channel, 16-bit ADC  
ADS1192   Complete Low Power Integrated Analog Front End for ECG Applications   ANALOG FRONT END - Medical Analog Front End    Two-channel, 16-bit ADC  
ADS1294   4-Channel, 24-Bit Analog-To-Digital Converter With Integrated ECG Front End   ANALOG FRONT END - Medical Analog Front End    Four-channel, 24-bit ADC  
ADS1296   6-Channel, 24-Bit Analog-To-Digital Converter With Integrated ECG Front End   ANALOG FRONT END - Medical Analog Front End    Six-channel, 24-bit ADC  
ADS1298   8-Channel, 24-Bit Analog-To-Digital Converter With Integrated ECG Front End   ANALOG FRONT END - Medical Analog Front End    Eight-channel, 24-bit ADC  
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